A common mineral of barium is barytes, or barium sulfate ($\ce{BaSO4}$). Because elements in the same periodic group have similar chemical properties, we might expect to and some radium sulfate ($\ce{RaSO4}$) mixed with barytes since radium is the last member of Group 2A. However, the only so...

From the phase diagram of water, we see that water is a liquid at 20°C, 1 atm. The state of the water at 20°C, 1 atm is liquid. But there is actually also a water vapor in equilibrium with liquid water. What is the definition of “the state of a substance at a specific temperature and pressure?”

I'm not sure if this is the correct place to post this or if I should be posting at Crafts or Engineering, but since my primary concern is about the safety of its use for my dogs I will post here. I have been investigating getting a "lickimat" for our dogs, and because it's something they're goin...